Narrated Ibn Umar: Al Abbas bin Abdul-Muttalib asked the permission of Allahs Apostle to let him stay in Mecca during the nights of Mina in order to provide the pilgrims with water to drink, so the Prophet permitted him.

Volume 2, Book 26, Number 700:

Narrated Ibn Abbas: Allah's Apostle came to the drinking place and asked for water. Al-Abbas said, "O Fadl! Go to your mother and bring water from her for Allah's Apostle ." Allah's Apostle said, "Give me water to drink." Al-Abbas said, "O Allahs Apostle! The people put their hands in it." Allah's Apostle again said, 'Give me water to drink. So, he drank from that water and then went to the Zam-zam (well) and there the people were offering water to the others and working at it (drawing water from the well). The Prophet then said to them, "Carry on! You are doing a good deed." Then he said, "Were I not afraid that other people would compete with you (in drawing water from Zam-zam), I would certainly take the rope and put it over this (i.e. his shoulder) (to draw water)." On saying that the Prophet pointed to his shoulder.

Volume 2, Book 26, Number 701:

Narrated Ibn Abbas: I gave Zam-zam water to Allah's Apostle and he drank it while standing. 'Asia (a sub-narrator) said that 'Ikrima took the oath that on that day the Prophet had not been standing but riding a camel.

Volume 2, Book 26, Number 702:

Narrated 'Aisha: We set out with Allah's Apostle in the year of his Last Hajj and we mended (the Ihram) for 'Umra. Then the Prophet said, "Whoever has a Hadi with him should assume Ihram for both Hajj and 'Umra, and should not finish it till he performs both of the them (Hajj and 'Umra)." When we reached Mecca, I had my menses. When we had performed our Hajj, the Prophet sent me with 'Abdur-Rahman to Tan'im and I performed the 'Umra. The Prophet said, "This is in lieu of your missed 'Umra." Those who had assumed Ihram for 'Umra performed Tawaf (between Safa and Marwa) and then finished their Ihram. And then they performed another Tawaf (between Safa and Marwa) after returning from Mina. And those who had assumed lhram for Hajj and 'Umra to get her ( Hajj-Qiran ) performed only one Tawaf (between Safa and Marwa).

Volume 2, Book 26, Number 703:

Narrated Nafi': 'Abdullah bin 'Abdullah bin 'Umar and his riding animal entered the house of Ibn 'Umar. He (the son of Ibn 'Umar) said, "I fear that this year a battle might take place between the people and you might be prevented from going to the Ka'ba. I suggest that you should stay here." Ibn Umar said, "Once Allah's Apostle set out for the pilgrimage, and the pagans of Quraish intervened between him and the Ka'ba. So, if the people intervened between me and the Ka'ba, I would do the same as Allah's Apostle had done . . . "Verily, in Allah's Apostle you have a good example." Then he added, "I make you a witness that I have intended to perform Hajj along with 'Umra." After arriving at Mecca, Ibn 'Umar performed one Tawaf only (between Safa and Marwa).

Volume 2, Book 26, Number 704:

Narrated Nafi': Ibn 'Umar intended to perform Hajj in the year when Al-Hajjaj attacked Ibn Az-Zubair. Somebody said to Ibn 'Umar, "There is a danger of an impending war between them." Ibn 'Umar said, "Verily, in Allah's Apostle you have a good example. (And if it happened as you say) then I would do the same as Allah's Apostle had done. I make you witness that I have decided to perform 'Umra." Then he set out and when he reached Al-Baida', he said, "The ceremonies of both Hajj and 'Umra are similar. I make you witness that I have made Hajj compulsory for me along with 'Umra." He drove (to Mecca) a Hadi which he had bought from (a place called) Qudaid and did not do more than that. He did not slaughter the Hadi or finish his Ihram, or shave or cut short his hair till the day of slaughtering the sacrifices (10th Dhul-Hijja). Then he slaughtered his Hadi and shaved his head and considered the first Tawaf (of Safa and Marwa) as sufficient for Hajj and 'Umra. Ibn 'Umar said, "Allah's Apostle did the same."